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Masahiro Yamadacc85b7b2015-07-26 02:46:26 +09001#
2# Serial device configuration
3#
4
Simon Glass388f78e2021-08-08 12:20:13 -06005menuconfig SERIAL
6 bool "Serial"
7 default y
8 help
9 Enable support for serial drivers. This allows use of a serial UART
10 for displaying messages while U-Boot is running. It also brings in
11 printf() and panic() functions. This should normally be enabled
12 unless there are space reasons not to. If you just need to disable
13 the console you can adjust the stdout environment variable or use
14 SILENT_CONSOLE.
15
16if SERIAL
Masahiro Yamadacc85b7b2015-07-26 02:46:26 +090017
Philipp Tomsich29c8bc02017-03-17 20:34:53 +010018config BAUDRATE
19 int "Default baudrate"
20 default 115200
21 help
22 Select a default baudrate, where "default" has a driver-specific
23 meaning of either setting the baudrate for the early debug UART
24 in the SPL stage (most drivers) or for choosing a default baudrate
25 in the absence of an environment setting (serial_mxc.c).
26
Hans de Goede04f80942015-08-08 17:45:18 +020027config REQUIRE_SERIAL_CONSOLE
28 bool "Require a serial port for console"
29 # Running without a serial console is not supported by the
30 # non-dm serial code
31 depends on DM_SERIAL
32 default y
33 help
34 Require a serial port for the console, and panic if none is found
35 during serial port initialization (default y). Set this to n on
36 boards which have no debug serial port whatsoever.
37
Tom Rinie69ba982018-03-06 19:02:27 -050038config SPECIFY_CONSOLE_INDEX
39 bool "Specify the port number used for console"
40 default y if !DM_SERIAL || (SPL && !SPL_DM_SERIAL) || \
41 (TPL && !TPL_DM_SERIAL)
42 help
43 In various cases, we need to specify which of the UART devices that
44 a board or SoC has available are to be used for the console device
45 in U-Boot.
46
Simon Glass30a13492015-12-13 21:36:58 -070047config SERIAL_PRESENT
48 bool "Provide a serial driver"
49 depends on DM_SERIAL
50 default y
51 help
52 In very space-constrained devices even the full UART driver is too
53 large. In this case the debug UART can still be used in some cases.
54 This option enables the full UART in U-Boot, so if is it disabled,
55 the full UART driver will be omitted, thus saving space.
56
57config SPL_SERIAL_PRESENT
58 bool "Provide a serial driver in SPL"
Adam Fordac4d80e2019-08-24 13:50:34 -050059 depends on DM_SERIAL && SPL
Simon Glass30a13492015-12-13 21:36:58 -070060 default y
61 help
62 In very space-constrained devices even the full UART driver is too
63 large. In this case the debug UART can still be used in some cases.
64 This option enables the full UART in SPL, so if is it disabled,
65 the full UART driver will be omitted, thus saving space.
66
Simon Glass60573922018-10-01 12:22:20 -060067config TPL_SERIAL_PRESENT
68 bool "Provide a serial driver in TPL"
Adam Fordac4d80e2019-08-24 13:50:34 -050069 depends on DM_SERIAL && TPL
Simon Glass60573922018-10-01 12:22:20 -060070 default y
71 help
72 In very space-constrained devices even the full UART driver is too
73 large. In this case the debug UART can still be used in some cases.
74 This option enables the full UART in TPL, so if is it disabled,
75 the full UART driver will be omitted, thus saving space.
76
Tom Rinie69ba982018-03-06 19:02:27 -050077# Logic to allow us to use the imply keyword to set what the default port
78# should be. The default is otherwise 1.
79config CONS_INDEX_0
80 bool
81
82config CONS_INDEX_2
83 bool
84
85config CONS_INDEX_3
86 bool
87
88config CONS_INDEX_4
89 bool
90
91config CONS_INDEX_5
92 bool
93
94config CONS_INDEX_6
95 bool
96
Mylène Josserand80b96442017-04-02 12:59:11 +020097config CONS_INDEX
98 int "UART used for console"
Tom Rinie69ba982018-03-06 19:02:27 -050099 depends on SPECIFY_CONSOLE_INDEX
100 range 0 6
101 default 0 if CONS_INDEX_0
102 default 2 if CONS_INDEX_2
103 default 3 if CONS_INDEX_3
104 default 4 if CONS_INDEX_4
105 default 5 if CONS_INDEX_5
106 default 6 if CONS_INDEX_6
Mylène Josserand80b96442017-04-02 12:59:11 +0200107 default 1
108 help
Tom Rinie69ba982018-03-06 19:02:27 -0500109 Set this to match the UART number of the serial console.
Mylène Josserand80b96442017-04-02 12:59:11 +0200110
Masahiro Yamada57ad8ee2014-10-23 22:26:09 +0900111config DM_SERIAL
112 bool "Enable Driver Model for serial drivers"
113 depends on DM
Sean Anderson08c854a2019-12-17 21:40:09 -0500114 select SYS_MALLOC_F
Masahiro Yamada57ad8ee2014-10-23 22:26:09 +0900115 help
Simon Glassd8b771d2015-02-05 21:41:35 -0700116 Enable driver model for serial. This replaces
117 drivers/serial/serial.c with the serial uclass, which
118 implements serial_putc() etc. The uclass interface is
119 defined in include/serial.h.
Masahiro Yamada4261c642014-10-23 22:26:11 +0900120
Stefan Roese02072832017-08-16 17:37:16 +0200121config SERIAL_RX_BUFFER
122 bool "Enable RX buffer for serial input"
123 depends on DM_SERIAL
124 help
125 Enable RX buffer support for the serial driver. This enables
126 pasting longer strings, even when the RX FIFO of the UART is
127 not big enough (e.g. 16 bytes on the normal NS16550).
128
129config SERIAL_RX_BUFFER_SIZE
130 int "RX buffer size"
131 depends on SERIAL_RX_BUFFER
132 default 256
133 help
134 The size of the RX buffer (needs to be power of 2)
135
Alexander Grafc8bda542018-01-29 13:57:20 +0100136config SERIAL_SEARCH_ALL
137 bool "Search for serial devices after default one failed"
138 depends on DM_SERIAL
139 help
140 The serial subsystem only searches for a single serial device
141 that was instantiated, but does not check whether it was probed
142 correctly. With this option set, we make successful probing
143 mandatory and search for fallback serial devices if the default
144 device does not work.
145
146 If unsure, say N.
147
Vabhav Sharma42149c92020-12-09 10:42:04 +0530148config SERIAL_PROBE_ALL
149 bool "Probe all available serial devices"
150 depends on DM_SERIAL
Vabhav Sharma42149c92020-12-09 10:42:04 +0530151 help
152 The serial subsystem only probes for a single serial device,
153 but does not probe for other remaining serial devices.
154 With this option set, we make probing and searching for
155 all available devices optional.
156 Normally, U-Boot talks to one serial port at a time, but SBSA
157 compliant UART devices like PL011 require initialization
158 by firmware and to let the kernel use serial port for sending
159 and receiving the characters.
160
161 If unsure, say N.
162
Simon Glassf9512aa2017-04-02 09:50:32 -0600163config SPL_DM_SERIAL
Heiko Schocherb0b588f2017-06-21 06:23:10 +0200164 bool "Enable Driver Model for serial drivers in SPL"
Tom Rinie69ba982018-03-06 19:02:27 -0500165 depends on DM_SERIAL && SPL_DM
Sean Anderson08c854a2019-12-17 21:40:09 -0500166 select SYS_SPL_MALLOC_F
Tom Rinie69ba982018-03-06 19:02:27 -0500167 default y
Simon Glassf9512aa2017-04-02 09:50:32 -0600168 help
169 Enable driver model for serial in SPL. This replaces
170 drivers/serial/serial.c with the serial uclass, which
171 implements serial_putc() etc. The uclass interface is
172 defined in include/serial.h.
173
174config TPL_DM_SERIAL
Heiko Schocherb0b588f2017-06-21 06:23:10 +0200175 bool "Enable Driver Model for serial drivers in TPL"
Thomas Hebbc850c6a2019-11-10 08:23:55 -0800176 depends on DM_SERIAL && TPL_DM
Sean Anderson08c854a2019-12-17 21:40:09 -0500177 select SYS_TPL_MALLOC_F
Simon Glassf9512aa2017-04-02 09:50:32 -0600178 default y if TPL && DM_SERIAL
179 help
180 Enable driver model for serial in TPL. This replaces
181 drivers/serial/serial.c with the serial uclass, which
182 implements serial_putc() etc. The uclass interface is
183 defined in include/serial.h.
184
Simon Glassbac6fd82015-01-26 18:27:07 -0700185config DEBUG_UART
186 bool "Enable an early debug UART for debugging"
187 help
188 The debug UART is intended for use very early in U-Boot to debug
189 problems when an ICE or other debug mechanism is not available.
190
191 To use it you should:
192 - Make sure your UART supports this interface
193 - Enable CONFIG_DEBUG_UART
194 - Enable the CONFIG for your UART to tell it to provide this interface
195 (e.g. CONFIG_DEBUG_UART_NS16550)
196 - Define the required settings as needed (see below)
197 - Call debug_uart_init() before use
198 - Call debug_uart_putc() to output a character
199
200 Depending on your platform it may be possible to use this UART before
201 a stack is available.
202
203 If your UART does not support this interface you can probably add
204 support quite easily. Remember that you cannot use driver model and
205 it is preferred to use no stack.
206
207 You must not use this UART once driver model is working and the
208 serial drivers are up and running (done in serial_init()). Otherwise
209 the drivers may conflict and you will get strange output.
210
Simon Glass27afb522015-01-26 18:27:09 -0700211choice
212 prompt "Select which UART will provide the debug UART"
213 depends on DEBUG_UART
Thomas Choud0738412015-11-19 21:48:03 +0800214 default DEBUG_UART_NS16550
Simon Glass27afb522015-01-26 18:27:09 -0700215
Thomas Chou26066df2015-10-23 07:36:37 +0800216config DEBUG_UART_ALTERA_JTAGUART
217 bool "Altera JTAG UART"
Michal Simek8da3a6b2020-05-28 12:05:12 +0200218 depends on ALTERA_JTAG_UART
Thomas Chou26066df2015-10-23 07:36:37 +0800219 help
220 Select this to enable a debug UART using the altera_jtag_uart driver.
221 You will need to provide parameters to make this work. The driver will
222 be available until the real driver model serial is running.
223
Thomas Chou6917a5d2015-10-21 21:26:54 +0800224config DEBUG_UART_ALTERA_UART
225 bool "Altera UART"
Michal Simek8da3a6b2020-05-28 12:05:12 +0200226 depends on ALTERA_UART
Thomas Chou6917a5d2015-10-21 21:26:54 +0800227 help
228 Select this to enable a debug UART using the altera_uart driver.
229 You will need to provide parameters to make this work. The driver will
230 be available until the real driver model serial is running.
231
Wills Wangcb48c6d2016-03-16 16:59:57 +0800232config DEBUG_UART_AR933X
233 bool "QCA/Atheros ar933x"
234 depends on AR933X_UART
235 help
236 Select this to enable a debug UART using the ar933x uart driver.
237 You will need to provide parameters to make this work. The
238 driver will be available until the real driver model serial is
239 running.
240
Alexey Brodkineede1672018-05-21 16:42:07 +0300241config DEBUG_ARC_SERIAL
242 bool "ARC UART"
243 depends on ARC_SERIAL
244 help
245 Select this to enable a debug UART using the ARC UART driver.
246 You will need to provide parameters to make this work. The
247 driver will be available until the real driver model serial is
248 running.
249
Wenyou Yang6b611e62016-10-17 09:49:55 +0800250config DEBUG_UART_ATMEL
251 bool "Atmel USART"
Michal Simek8da3a6b2020-05-28 12:05:12 +0200252 depends on ATMEL_USART
Wenyou Yang6b611e62016-10-17 09:49:55 +0800253 help
254 Select this to enable a debug UART using the atmel usart driver. You
255 will need to provide parameters to make this work. The driver will
256 be available until the real driver-model serial is running.
257
Álvaro Fernández Rojas842cfaf2017-04-25 00:39:16 +0200258config DEBUG_UART_BCM6345
259 bool "BCM6345 UART"
260 depends on BCM6345_SERIAL
261 help
262 Select this to enable a debug UART on BCM6345 SoCs. You
263 will need to provide parameters to make this work. The driver will
264 be available until the real driver model serial is running.
265
Simon Glass27afb522015-01-26 18:27:09 -0700266config DEBUG_UART_NS16550
267 bool "ns16550"
Michal Simek8da3a6b2020-05-28 12:05:12 +0200268 depends on SYS_NS16550
Simon Glass27afb522015-01-26 18:27:09 -0700269 help
270 Select this to enable a debug UART using the ns16550 driver. You
271 will need to provide parameters to make this work. The driver will
272 be available until the real driver model serial is running.
273
Simon Glass5a991bd2015-08-04 12:33:40 -0600274config DEBUG_EFI_CONSOLE
275 bool "EFI"
276 depends on EFI_APP
277 help
278 Select this to enable a debug console which calls back to EFI to
279 output to the console. This can be useful for early debugging of
280 U-Boot when running on top of EFI (Extensive Firmware Interface).
281 This is a type of BIOS used by PCs.
282
Simon Glass74afb292015-07-02 18:15:54 -0600283config DEBUG_UART_S5P
284 bool "Samsung S5P"
Michal Simek8da3a6b2020-05-28 12:05:12 +0200285 depends on ARCH_EXYNOS || ARCH_S5PC1XX
Simon Glass74afb292015-07-02 18:15:54 -0600286 help
287 Select this to enable a debug UART using the serial_s5p driver. You
288 will need to provide parameters to make this work. The driver will
289 be available until the real driver-model serial is running.
290
Beniamino Galvanid1037e42016-05-08 08:30:16 +0200291config DEBUG_UART_MESON
292 bool "Amlogic Meson"
293 depends on MESON_SERIAL
294 help
295 Select this to enable a debug UART using the serial_meson driver. You
296 will need to provide parameters to make this work. The driver will
297 be available until the real driver-model serial is running.
298
Michal Simek8af618b2015-12-14 16:55:10 +0100299config DEBUG_UART_UARTLITE
300 bool "Xilinx Uartlite"
Michal Simek8da3a6b2020-05-28 12:05:12 +0200301 depends on XILINX_UARTLITE
Michal Simek8af618b2015-12-14 16:55:10 +0100302 help
303 Select this to enable a debug UART using the serial_uartlite driver.
304 You will need to provide parameters to make this work. The driver will
305 be available until the real driver-model serial is running.
306
Michal Simekb3cc2602016-02-23 10:02:28 +0100307config DEBUG_UART_ARM_DCC
308 bool "ARM DCC"
Michal Simek8da3a6b2020-05-28 12:05:12 +0200309 depends on ARM_DCC
Michal Simekb3cc2602016-02-23 10:02:28 +0100310 help
311 Select this to enable a debug UART using the ARM JTAG DCC port.
312 The DCC port can be used for very early debugging and doesn't require
313 any additional setting like address/baudrate/clock. On systems without
314 any serial interface this is the easiest way how to get console.
315 Every ARM core has own DCC port which is the part of debug interface.
316 This port is available at least on ARMv6, ARMv7, ARMv8 and XScale
317 architectures.
318
Stefan Roese027276a2016-05-17 16:36:00 +0200319config DEBUG_MVEBU_A3700_UART
320 bool "Marvell Armada 3700"
Michal Simek8da3a6b2020-05-28 12:05:12 +0200321 depends on MVEBU_A3700_UART
Stefan Roese027276a2016-05-17 16:36:00 +0200322 help
323 Select this to enable a debug UART using the serial_mvebu driver. You
324 will need to provide parameters to make this work. The driver will
325 be available until the real driver-model serial is running.
326
Simon Glass091f6a32015-10-17 19:41:22 -0600327config DEBUG_UART_ZYNQ
328 bool "Xilinx Zynq"
Michal Simek8da3a6b2020-05-28 12:05:12 +0200329 depends on ZYNQ_SERIAL
Simon Glass091f6a32015-10-17 19:41:22 -0600330 help
Michal Simek49e12762015-12-01 14:29:34 +0100331 Select this to enable a debug UART using the serial_zynq driver. You
Simon Glass091f6a32015-10-17 19:41:22 -0600332 will need to provide parameters to make this work. The driver will
333 be available until the real driver-model serial is running.
334
Francois Retiefd18eb7b2015-10-29 12:55:34 +0200335config DEBUG_UART_APBUART
336 depends on LEON3
337 bool "Gaisler APBUART"
338 help
339 Select this to enable a debug UART using the serial_leon3 driver. You
340 will need to provide parameters to make this work. The driver will
341 be available until the real driver model serial is running.
342
Sergey Temerkhanov5710d7e2015-10-14 09:54:24 -0700343config DEBUG_UART_PL010
344 bool "pl010"
Tom Rini0ba2f372021-05-22 08:47:08 -0400345 depends on PL01X_SERIAL
Sergey Temerkhanov5710d7e2015-10-14 09:54:24 -0700346 help
347 Select this to enable a debug UART using the pl01x driver with the
348 PL010 UART type. You will need to provide parameters to make this
349 work. The driver will be available until the real driver model
350 serial is running.
351
352config DEBUG_UART_PL011
353 bool "pl011"
Michal Simekceedd3a2021-06-24 13:36:23 +0200354 depends on PL01X_SERIAL || PL011_SERIAL
Sergey Temerkhanov5710d7e2015-10-14 09:54:24 -0700355 help
356 Select this to enable a debug UART using the pl01x driver with the
357 PL011 UART type. You will need to provide parameters to make this
358 work. The driver will be available until the real driver model
359 serial is running.
360
Paul Thacker1dc42832016-01-28 15:30:14 +0530361config DEBUG_UART_PIC32
362 bool "Microchip PIC32"
363 depends on PIC32_SERIAL
364 help
365 Select this to enable a debug UART using the serial_pic32 driver. You
366 will need to provide parameters to make this work. The driver will
367 be available until the real driver model serial is running.
368
Jagan Tekicf6db162017-06-06 05:31:51 +0000369config DEBUG_UART_MXC
370 bool "IMX Serial port"
371 depends on MXC_UART
372 help
373 Select this to enable a debug UART using the serial_mxc driver. You
374 will need to provide parameters to make this work. The driver will
375 be available until the real driver model serial is running.
376
Simon Glasse3057f32018-10-01 11:55:15 -0600377config DEBUG_UART_SANDBOX
378 bool "sandbox"
379 depends on SANDBOX_SERIAL
380 help
381 Select this to enable the debug UART using the sandbox driver. This
382 provides basic serial output from the console without needing to
383 start up driver model. The driver will be available until the real
384 driver model serial is running.
385
Anup Patel4b1d68f2018-12-15 11:35:15 +0530386config DEBUG_UART_SIFIVE
387 bool "SiFive UART"
Michal Simekf0410172020-07-10 12:41:13 +0200388 depends on SIFIVE_SERIAL
Anup Patel4b1d68f2018-12-15 11:35:15 +0530389 help
390 Select this to enable a debug UART using the serial_sifive driver. You
391 will need to provide parameters to make this work. The driver will
392 be available until the real driver-model serial is running.
393
Patrick Delaunayab8e5d22018-05-17 14:50:42 +0200394config DEBUG_UART_STM32
395 bool "STMicroelectronics STM32"
396 depends on STM32_SERIAL
397 help
398 Select this to enable a debug UART using the serial_stm32 driver
399 You will need to provide parameters to make this work.
400 The driver will be available until the real driver model
401 serial is running.
402
Masahiro Yamada52f0c512016-03-18 16:41:52 +0900403config DEBUG_UART_UNIPHIER
404 bool "UniPhier on-chip UART"
405 depends on ARCH_UNIPHIER
406 help
407 Select this to enable a debug UART using the UniPhier on-chip UART.
408 You will need to provide DEBUG_UART_BASE to make this work. The
409 driver will be available until the real driver-model serial is
410 running.
411
Lokesh Vutla771d69c2017-04-22 15:57:25 +0530412config DEBUG_UART_OMAP
413 bool "OMAP uart"
Michal Simek8da3a6b2020-05-28 12:05:12 +0200414 depends on OMAP_SERIAL
Lokesh Vutla771d69c2017-04-22 15:57:25 +0530415 help
416 Select this to enable a debug UART using the omap ns16550 driver.
417 You will need to provide parameters to make this work. The driver
418 will be available until the real driver model serial is running.
419
developer90af58f2018-11-15 10:08:02 +0800420config DEBUG_UART_MTK
421 bool "MediaTek High-speed UART"
422 depends on MTK_SERIAL
423 help
424 Select this to enable a debug UART using the MediaTek High-speed
425 UART driver.
426 You will need to provide parameters to make this work. The
427 driver will be available until the real driver model serial is
428 running.
429
developere076b9e2020-11-12 16:36:05 +0800430config DEBUG_UART_MT7620
431 bool "UART driver for MediaTek MT7620 and earlier SoCs"
432 depends on MT7620_SERIAL
433 help
434 Select this to enable a debug UART using the UART driver for
435 MediaTek MT7620 and earlier SoCs.
436 You will need to provide parameters to make this work. The
437 driver will be available until the real driver model serial is
438 running.
439
Simon Glass27afb522015-01-26 18:27:09 -0700440endchoice
441
Simon Glassbac6fd82015-01-26 18:27:07 -0700442config DEBUG_UART_BASE
443 hex "Base address of UART"
Tom Riniae965f22020-10-23 09:15:55 -0400444 depends on DEBUG_UART
Simon Glasse3057f32018-10-01 11:55:15 -0600445 default 0 if DEBUG_UART_SANDBOX
Simon Glassbac6fd82015-01-26 18:27:07 -0700446 help
447 This is the base address of your UART for memory-mapped UARTs.
448
449 A default should be provided by your board, but if not you will need
450 to use the correct value here.
451
452config DEBUG_UART_CLOCK
453 int "UART input clock"
Tom Riniae965f22020-10-23 09:15:55 -0400454 depends on DEBUG_UART
Simon Glasse3057f32018-10-01 11:55:15 -0600455 default 0 if DEBUG_UART_SANDBOX
Marek Behún6e0e23c2021-07-09 17:40:59 +0200456 default 0 if DEBUG_MVEBU_A3700_UART
Simon Glassbac6fd82015-01-26 18:27:07 -0700457 help
458 The UART input clock determines the speed of the internal UART
459 circuitry. The baud rate is derived from this by dividing the input
460 clock down.
461
462 A default should be provided by your board, but if not you will need
463 to use the correct value here.
464
Simon Glass54111292015-02-27 22:06:25 -0700465config DEBUG_UART_SHIFT
466 int "UART register shift"
Tom Riniae965f22020-10-23 09:15:55 -0400467 depends on DEBUG_UART
Simon Glass54111292015-02-27 22:06:25 -0700468 default 0 if DEBUG_UART
469 help
470 Some UARTs (notably ns16550) support different register layouts
471 where the registers are spaced either as bytes, words or some other
472 value. Use this value to specify the shift to use, where 0=byte
473 registers, 2=32-bit word registers, etc.
474
Simon Glassc52be122015-10-18 19:51:24 -0600475config DEBUG_UART_BOARD_INIT
476 bool "Enable board-specific debug UART init"
477 depends on DEBUG_UART
478 help
479 Some boards need to set things up before the debug UART can be used.
480 On these boards a call to debug_uart_init() is insufficient. When
481 this option is enabled, the function board_debug_uart_init() will
482 be called when debug_uart_init() is called. You can put any code
483 here that is needed to set up the UART ready for use, such as set
484 pin multiplexing or enable clocks.
485
Simon Glass1f7338a2015-10-18 19:51:25 -0600486config DEBUG_UART_ANNOUNCE
487 bool "Show a message when the debug UART starts up"
488 depends on DEBUG_UART
489 help
490 Enable this option to show a message when the debug UART is ready
491 for use. You will see a message like "<debug_uart> " as soon as
492 U-Boot has the UART ready for use (i.e. your code calls
493 debug_uart_init()). This can be useful just as a check that
494 everything is working.
495
Sergey Temerkhanov5710d7e2015-10-14 09:54:24 -0700496config DEBUG_UART_SKIP_INIT
497 bool "Skip UART initialization"
Simon Goldschmidt03a96832019-01-09 20:27:09 +0100498 depends on DEBUG_UART
Sergey Temerkhanov5710d7e2015-10-14 09:54:24 -0700499 help
500 Select this if the UART you want to use for debug output is already
501 initialized by the time U-Boot starts its execution.
502
Simon Goldschmidte03ad212019-01-09 20:35:31 +0100503config DEBUG_UART_NS16550_CHECK_ENABLED
504 bool "Check if UART is enabled on output"
505 depends on DEBUG_UART
506 depends on DEBUG_UART_NS16550
507 help
508 Select this if puts()/putc() might be called before the debug UART
509 has been initialized. If this is disabled, putc() might sit in a
510 tight loop if it is called before debug_uart_init() has been called.
511
512 Note that this does not work for every ns16550-compatible UART and
513 so has to be enabled carefully or you might notice lost characters.
514
Thomas Chou26066df2015-10-23 07:36:37 +0800515config ALTERA_JTAG_UART
516 bool "Altera JTAG UART support"
517 depends on DM_SERIAL
518 help
519 Select this to enable an JTAG UART for Altera devices.The JTAG UART
520 core implements a method to communicate serial character streams
521 between a host PC and a Qsys system on an Altera FPGA. Please find
522 details on the "Embedded Peripherals IP User Guide" of Altera.
523
524config ALTERA_JTAG_UART_BYPASS
525 bool "Bypass output when no connection"
526 depends on ALTERA_JTAG_UART
527 help
528 Bypass console output and keep going even if there is no JTAG
529 terminal connection with the host. The console output will resume
530 once the JTAG terminal is connected. Without the bypass, the console
531 output will wait forever until a JTAG terminal is connected. If you
532 not are sure, say Y.
533
Thomas Chou6917a5d2015-10-21 21:26:54 +0800534config ALTERA_UART
535 bool "Altera UART support"
536 depends on DM_SERIAL
537 help
538 Select this to enable an UART for Altera devices. Please find
539 details on the "Embedded Peripherals IP User Guide" of Altera.
540
Wills Wangcb48c6d2016-03-16 16:59:57 +0800541config AR933X_UART
542 bool "QCA/Atheros ar933x UART support"
543 depends on DM_SERIAL && SOC_AR933X
544 help
545 Select this to enable UART support for QCA/Atheros ar933x
546 devices. This driver uses driver model and requires a device
547 tree binding to operate, please refer to the document at
548 doc/device-tree-bindings/serial/qca,ar9330-uart.txt.
549
Alexey Brodkinb9a0a422018-05-21 16:40:05 +0300550config ARC_SERIAL
551 bool "ARC UART support"
552 depends on DM_SERIAL
553 help
554 Select this to enable support for ARC UART now typically
555 only used in Synopsys DesignWare ARC simulators like nSIM.
556
Tom Rini0f73ac62020-06-02 17:26:33 -0400557config ARM_DCC
558 bool "ARM Debug Communication Channel (DCC) as UART support"
559 depends on ARM
560 help
561 Select this to enable using the ARM DCC as a form of UART.
562
Wenyou Yang58d44482016-10-17 09:49:54 +0800563config ATMEL_USART
564 bool "Atmel USART support"
565 help
566 Select this to enable USART support for Atmel SoCs. It can be
567 configured in the device tree, and input clock frequency can
568 be got from the clk node.
569
Stefan Roeseb1f3da82019-04-03 15:24:19 +0200570config SPL_UART_CLOCK
571 int "SPL fixed UART input clock"
572 depends on ATMEL_USART && SPL && !SPL_CLK
573 default 132096000 if ARCH_AT91
574 help
575 Provide a fixed clock value as input to the UART controller. This
576 might be needed on platforms which can't enable CONFIG_SPL_CLK
577 because of SPL image size restrictions.
578
Alexander Graf1b442952018-01-25 12:05:53 +0100579config BCM283X_MU_SERIAL
580 bool "Support for BCM283x Mini-UART"
581 depends on DM_SERIAL && ARCH_BCM283X
582 default y
583 help
584 Select this to enable Mini-UART support on BCM283X family of SoCs.
585
Alexander Grafa73b0ec2018-01-25 12:05:55 +0100586config BCM283X_PL011_SERIAL
587 bool "Support for BCM283x PL011 UART"
588 depends on PL01X_SERIAL && ARCH_BCM283X
589 default y
590 help
591 Select this to enable an overriding PL011 driver for BCM283X SoCs
592 that supports automatic disable, so that it only gets used when
593 the UART is actually muxed.
594
Álvaro Fernández Rojas842cfaf2017-04-25 00:39:16 +0200595config BCM6345_SERIAL
596 bool "Support for BCM6345 UART"
Álvaro Fernández Rojas4ab29872018-12-01 18:42:09 +0100597 depends on DM_SERIAL
Álvaro Fernández Rojas842cfaf2017-04-25 00:39:16 +0200598 help
599 Select this to enable UART on BCM6345 SoCs.
600
Simon Glass4d221072019-12-19 17:58:20 -0700601config COREBOOT_SERIAL
602 bool "Coreboot UART support"
603 depends on DM_SERIAL
604 default y if SYS_COREBOOT
605 select SYS_NS16550
606 help
607 Select this to enable a ns16550-style UART where the platform data
608 comes from the coreboot 'sysinfo' tables. This allows U-Boot to have
609 a serial console on any platform without needing to change the
610 device tree, etc.
611
Jason Liadca83a2020-01-30 12:34:58 -0800612config CORTINA_UART
613 bool "Cortina UART support"
614 depends on DM_SERIAL
615 help
616 Select this to enable UART support for Cortina-Access UART devices
617 found on CAxxxx SoCs.
618
Tuomas Tynkkynenf2c84702018-04-09 04:34:34 +0300619config FSL_LINFLEXUART
620 bool "Freescale Linflex UART support"
621 depends on DM_SERIAL
622 help
623 Select this to enable the Linflex serial module found on some
624 NXP SoCs like S32V234.
625
Bin Meng4409dcf2016-01-13 19:39:00 -0800626config FSL_LPUART
627 bool "Freescale LPUART support"
628 help
629 Select this to enable a Low Power UART for Freescale VF610 and
630 QorIQ Layerscape devices.
631
Stefan Roese027276a2016-05-17 16:36:00 +0200632config MVEBU_A3700_UART
633 bool "UART support for Armada 3700"
Stefan Roese027276a2016-05-17 16:36:00 +0200634 help
635 Choose this option to add support for UART driver on the Marvell
636 Armada 3700 SoC. The base address is configured via DT.
637
Angelo Dureghello6d542f32019-03-13 21:46:49 +0100638config MCFUART
639 bool "Freescale ColdFire UART support"
640 help
641 Choose this option to add support for UART driver on the ColdFire
642 SoC's family. The serial communication channel provides a full-duplex
643 asynchronous/synchronous receiver and transmitter deriving an
644 operating frequency from the internal bus clock or an external clock.
645
Jagan Tekia73597a2016-10-08 18:00:08 +0530646config MXC_UART
647 bool "IMX serial port support"
Tom Rini80b14972021-02-20 20:05:43 -0500648 depends on ARCH_MX25 || ARCH_MX31 || TARGET_FLEA3 \
Tom Rinid0193802020-06-09 10:46:46 -0400649 || MX5 || MX6 || MX7 || IMX8M
Jagan Tekia73597a2016-10-08 18:00:08 +0530650 help
651 If you have a machine based on a Motorola IMX CPU you
652 can enable its onboard serial port by enabling this option.
653
Keng Soon Cheah755e2d02017-08-24 20:29:07 -0700654config NULLDEV_SERIAL
655 bool "Null serial device"
656 help
657 Select this to enable null serial device support. A null serial
658 device merely acts as a placeholder for a serial device and does
659 nothing for all it's operation.
660
Paul Thacker1dc42832016-01-28 15:30:14 +0530661config PIC32_SERIAL
662 bool "Support for Microchip PIC32 on-chip UART"
663 depends on DM_SERIAL && MACH_PIC32
664 default y
665 help
666 Support for the UART found on Microchip PIC32 SoC's.
667
Thomas Choua6cec012015-11-19 21:48:14 +0800668config SYS_NS16550
669 bool "NS16550 UART or compatible"
670 help
671 Support NS16550 UART or compatible. This can be enabled in the
672 device tree with the correct input clock frequency. If the input
673 clock frequency is not defined in the device tree, the macro
674 CONFIG_SYS_NS16550_CLK defined in a legacy board header file will
675 be used. It can be a constant or a function to get clock, eg,
676 get_serial_clock().
677
Simon Glassf8b1a242019-12-19 17:58:18 -0700678config NS16550_DYNAMIC
679 bool "Allow NS16550 to be configured at runtime"
680 default y if SYS_COREBOOT || SYS_SLIMBOOTLOADER
681 help
682 Enable this option to allow device-tree control of the driver.
683
684 Normally this driver is controlled by the following options:
685
686 CONFIG_SYS_NS16550_PORT_MAPPED - indicates that port I/O is used for
687 access. If not enabled, then the UART is memory-mapped.
688 CONFIG_SYS_NS16550_MEM32 - if memory-mapped, indicates that 32-bit
689 access should be used (instead of 8-bit)
690 CONFIG_SYS_NS16550_REG_SIZE - indicates register width and also
691 endianness. If positive, big-endian access is used. If negative,
692 little-endian is used.
693
694 It is not a good practice for a driver to be statically configured,
695 since it prevents the same driver being used for different types of
696 UARTs in a system. This option avoids this problem at the cost of a
697 slightly increased code size.
698
Andy Shevchenkoc65a7fe2017-02-28 14:04:10 +0200699config INTEL_MID_SERIAL
700 bool "Intel MID platform UART support"
701 depends on DM_SERIAL && OF_CONTROL
702 depends on INTEL_MID
703 select SYS_NS16550
704 help
705 Select this to enable a UART for Intel MID platforms.
706 This uses the ns16550 driver as a library.
707
Alexander Graf65bfb422018-01-25 12:05:51 +0100708config PL011_SERIAL
709 bool "ARM PL011 driver"
710 depends on !DM_SERIAL
711 help
712 Select this to enable a UART for platforms using PL011.
713
Alexander Graf633ef892018-01-25 12:05:52 +0100714config PL01X_SERIAL
715 bool "ARM PL010 and PL011 driver"
716 depends on DM_SERIAL
717 help
718 Select this to enable a UART for platforms using PL010 or PL011.
719
Simon Glassb3068ad2016-07-04 11:58:24 -0600720config ROCKCHIP_SERIAL
721 bool "Rockchip on-chip UART support"
722 depends on DM_SERIAL && SPL_OF_PLATDATA
723 help
724 Select this to enable a debug UART for Rockchip devices when using
Tom Rini9732f792017-01-14 12:20:23 -0500725 CONFIG_SPL_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt).
Simon Glassb3068ad2016-07-04 11:58:24 -0600726 This uses the ns16550 driver, converting the platdata from of-platdata
727 to the ns16550 format.
728
Mark Kettenis3b9ad302021-02-12 23:22:18 +0100729config S5P_SERIAL
730 bool "Support for Samsung S5P UART"
731 depends on ARCH_EXYNOS || ARCH_S5PC1XX
732 default y
733 help
734 Select this to enable Samsung S5P UART support.
735
Simon Glass8579a512015-03-06 13:19:03 -0700736config SANDBOX_SERIAL
737 bool "Sandbox UART support"
Masahiro Yamadaa8318672015-08-28 20:14:21 +0900738 depends on SANDBOX
Simon Glass8579a512015-03-06 13:19:03 -0700739 help
740 Select this to enable a seral UART for sandbox. This is required to
741 operate correctly, otherwise you will see no serial output from
742 sandbox. The emulated UART will display to the console and console
743 input will be fed into the UART. This allows you to interact with
744 U-Boot.
745
746 The operation of the console is controlled by the -t command-line
747 flag. In raw mode, U-Boot sees all characters from the terminal
748 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C
749 is processed by the terminal, and terminates U-Boot. Valid options
750 are:
751
752 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot
753 -t raw Raw mode, Ctrl-C is processed by U-Boot
754 -t cooked Cooked mode, Ctrl-C terminates
755
Marek Vasut2b2e4832017-07-21 23:18:46 +0200756config SCIF_CONSOLE
757 bool "Renesas SCIF UART support"
758 depends on SH || ARCH_RMOBILE
759 help
760 Select this to enable Renesas SCIF UART. To operate serial ports
761 on systems with RCar or SH SoCs, say Y to this option. If unsure,
762 say N.
763
Masahiro Yamada4261c642014-10-23 22:26:11 +0900764config UNIPHIER_SERIAL
Masahiro Yamada563ee4c2015-05-29 17:30:01 +0900765 bool "Support for UniPhier on-chip UART"
Masahiro Yamadaa8318672015-08-28 20:14:21 +0900766 depends on ARCH_UNIPHIER
Masahiro Yamadadf5fda02016-08-25 19:00:37 +0900767 default y
Masahiro Yamada4261c642014-10-23 22:26:11 +0900768 help
Masahiro Yamada563ee4c2015-05-29 17:30:01 +0900769 If you have a UniPhier based board and want to use the on-chip
770 serial ports, say Y to this option. If unsure, say N.
Simon Glass1c32bdb2015-07-27 15:47:23 -0600771
Michal Simek93ce5052015-12-09 12:50:05 +0100772config XILINX_UARTLITE
773 bool "Xilinx Uarlite support"
Michal Simek3239d712020-08-24 14:41:51 +0200774 depends on DM_SERIAL
Michal Simek93ce5052015-12-09 12:50:05 +0100775 help
776 If you have a Xilinx based board and want to use the uartlite
777 serial ports, say Y to this option. If unsure, say N.
778
Beniamino Galvanid1037e42016-05-08 08:30:16 +0200779config MESON_SERIAL
780 bool "Support for Amlogic Meson UART"
781 depends on DM_SERIAL && ARCH_MESON
782 help
783 If you have an Amlogic Meson based board and want to use the on-chip
784 serial ports, say Y to this option. If unsure, say N.
785
Mateusz Kulikowski8aac6972016-03-31 23:12:14 +0200786config MSM_SERIAL
787 bool "Qualcomm on-chip UART"
788 depends on DM_SERIAL
789 help
790 Support Data Mover UART used on Qualcomm Snapdragon SoCs.
791 It should support all Qualcomm devices with UARTDM version 1.4,
792 for example APQ8016 and MSM8916.
793 Single baudrate is supported in current implementation (115200).
Stefan Roese027276a2016-05-17 16:36:00 +0200794
Stefan Roese09e90762021-04-07 09:12:31 +0200795config OCTEON_SERIAL_BOOTCMD
796 bool "MIPS Octeon PCI remote bootcmd input"
797 depends on ARCH_OCTEON
798 depends on DM_SERIAL
799 select SYS_IS_IN_ENV
800 select CONSOLE_MUX
801 help
802 This driver supports remote input over the PCIe bus from a host
803 to U-Boot for entering commands. It is utilized by the host
804 commands 'oct-remote-load' and 'oct-remote-bootcmd'.
805
Stefan Roese01452252021-04-07 09:12:30 +0200806config OCTEON_SERIAL_PCIE_CONSOLE
807 bool "MIPS Octeon PCIe remote console"
808 depends on ARCH_OCTEON
809 depends on (DM_SERIAL && DM_STDIO)
810 select SYS_STDIO_DEREGISTER
811 select SYS_CONSOLE_IS_IN_ENV
812 select CONSOLE_MUX
813 help
814 This driver supports remote console over the PCIe bus when the
815 Octeon is running in PCIe target mode. The host program
816 'oct-remote-console' can be used to connect to this console.
817 The console number will likely be 0 or 1.
818
Lokesh Vutla42cb4b82018-08-27 15:55:24 +0530819config OMAP_SERIAL
820 bool "Support for OMAP specific UART"
821 depends on DM_SERIAL
Lokesh Vutla9bdec002018-08-27 15:57:08 +0530822 default y if (ARCH_OMAP2PLUS || ARCH_K3)
Lokesh Vutla42cb4b82018-08-27 15:55:24 +0530823 select SYS_NS16550
824 help
825 If you have an TI based SoC and want to use the on-chip serial
826 port, say Y to this option. If unsure say N.
827
Manivannan Sadhasivam01e47392018-06-14 23:38:38 +0530828config OWL_SERIAL
829 bool "Actions Semi OWL UART"
830 depends on DM_SERIAL && ARCH_OWL
831 help
832 If you have a Actions Semi OWL based board and want to use the on-chip
833 serial port, say Y to this option. If unsure, say N.
834 Single baudrate is supported in current implementation (115200).
835
Marcel Ziswilercd22bf62016-11-14 21:40:25 +0100836config PXA_SERIAL
837 bool "PXA serial port support"
838 help
839 If you have a machine based on a Marvell XScale PXA2xx CPU you
840 can enable its onboard serial ports by enabling this option.
841
Anup Patel4b1d68f2018-12-15 11:35:15 +0530842config SIFIVE_SERIAL
843 bool "SiFive UART support"
844 depends on DM_SERIAL
845 help
846 This driver supports the SiFive UART. If unsure say N.
847
Patrice Chotard42d742b2017-02-21 13:37:07 +0100848config STI_ASC_SERIAL
849 bool "STMicroelectronics on-chip UART"
850 depends on DM_SERIAL && ARCH_STI
851 help
852 Select this to enable Asynchronous Serial Controller available
853 on STiH410 SoC. This is a basic implementation, it supports
854 following baudrate 9600, 19200, 38400, 57600 and 115200.
855
Patrice Chotard9e276502018-01-12 09:23:49 +0100856config STM32_SERIAL
Patrice Chotard72cefd52017-07-26 15:48:39 +0200857 bool "STMicroelectronics STM32 SoCs on-chip UART"
Patrick Delaunay85b53972018-03-12 10:46:10 +0100858 depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7 || ARCH_STM32MP)
Patrice Chotard72cefd52017-07-26 15:48:39 +0200859 help
Patrick Delaunay85b53972018-03-12 10:46:10 +0100860 If you have a machine based on a STM32 F4, F7, H7 or MP1 SOC
861 you can enable its onboard serial ports, say Y to this option.
Patrice Chotard3b2a14f2017-09-13 18:00:05 +0200862 If unsure, say N.
Patrice Chotard72cefd52017-07-26 15:48:39 +0200863
Michal Simekab754532017-11-06 09:16:05 +0100864config ZYNQ_SERIAL
865 bool "Cadence (Xilinx Zynq) UART support"
Michal Simek3239d712020-08-24 14:41:51 +0200866 depends on DM_SERIAL
Michal Simekab754532017-11-06 09:16:05 +0100867 help
868 This driver supports the Cadence UART. It is found e.g. in Xilinx
869 Zynq/ZynqMP.
870
developer90af58f2018-11-15 10:08:02 +0800871config MTK_SERIAL
872 bool "MediaTek High-speed UART support"
873 depends on DM_SERIAL
874 help
875 Select this to enable UART support for MediaTek High-speed UART
876 devices. This driver uses driver model and requires a device
877 tree binding to operate.
878 The High-speed UART is compatible with the ns16550a UART and have
879 its own high-speed registers.
880
developere076b9e2020-11-12 16:36:05 +0800881config MT7620_SERIAL
882 bool "UART driver for MediaTek MT7620 and earlier SoCs"
883 depends on DM_SERIAL
884 help
885 Select this to enable UART support for MediaTek MT7620 and earlier
886 SoCs. This driver uses driver model and requires a device tree
887 binding to operate.
888 The UART driver for MediaTek MT7620 and earlier SoCs is *NOT*
889 compatible with the ns16550a UART.
890
Christophe Leroy9ac4a542017-07-06 10:33:27 +0200891config MPC8XX_CONS
892 bool "Console driver for MPC8XX"
Christophe Leroyb3510fb2018-03-16 17:20:41 +0100893 depends on MPC8xx
Christophe Leroy9ac4a542017-07-06 10:33:27 +0200894 default y
895
Peng Fan8162f8f2020-08-06 12:42:50 +0300896config XEN_SERIAL
897 bool "XEN serial support"
898 depends on XEN
899 help
900 If built without DM support, then requires Xen
901 to be built with CONFIG_VERBOSE_DEBUG.
902
Christophe Leroy9ac4a542017-07-06 10:33:27 +0200903choice
904 prompt "Console port"
905 default 8xx_CONS_SMC1
906 depends on MPC8XX_CONS
907 help
908 Depending on board, select one serial port
909 (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2)
910
911config 8xx_CONS_SMC1
912 bool "SMC1"
913
914config 8xx_CONS_SMC2
915 bool "SMC2"
916
917endchoice
918
919config SYS_SMC_RXBUFLEN
920 int "Console Rx buffer length"
921 depends on MPC8XX_CONS
922 default 1
923 help
924 With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
925 the maximum receive buffer length for the SMC.
926 This option is actual only for 8xx possible.
927 If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
928 must be defined, to setup the maximum idle timeout for
929 the SMC.
930
931config SYS_MAXIDLE
932 int "maximum idle timeout"
933 depends on MPC8XX_CONS
934 default 0
935
936config SYS_BRGCLK_PRESCALE
937 int "BRG Clock Prescale"
938 depends on MPC8XX_CONS
939 default 1
940
941config SYS_SDSR
942 hex "SDSR Value"
943 depends on MPC8XX_CONS
944 default 0x83
945
946config SYS_SDMR
947 hex "SDMR Value"
948 depends on MPC8XX_CONS
949 default 0
950
Simon Glass388f78e2021-08-08 12:20:13 -0600951endif